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| author | Jelmer Vernooij <jelmer@samba.org> | 2005-10-18 14:12:33 +0000 |
|---|---|---|
| committer | Gerald (Jerry) Carter <jerry@samba.org> | 2007-10-10 13:44:54 -0500 |
| commit | 087dd76232b8e7471db5f90fff4e49b2359f1557 (patch) | |
| tree | 29ca1959191ea3f4e49b7d80bb1bc2837b67b21d /source4/librpc/ndr | |
| parent | bf59ef9d72b97b5e972ee84d410db8cbd2e2588e (diff) | |
| download | samba-087dd76232b8e7471db5f90fff4e49b2359f1557.tar.gz samba-087dd76232b8e7471db5f90fff4e49b2359f1557.tar.bz2 samba-087dd76232b8e7471db5f90fff4e49b2359f1557.zip | |
r11141: Re-add paranoid string terminator check
(This used to be commit 55805b5ed9493160ff17c26d2e1361947f368707)
Diffstat (limited to 'source4/librpc/ndr')
| -rw-r--r-- | source4/librpc/ndr/ndr_string.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/source4/librpc/ndr/ndr_string.c b/source4/librpc/ndr/ndr_string.c index 1a922e2880..96f48edda9 100644 --- a/source4/librpc/ndr/ndr_string.c +++ b/source4/librpc/ndr/ndr_string.c @@ -612,21 +612,24 @@ uint32_t ndr_string_length(const void *_var, uint32_t element_size) return i+1; } -NTSTATUS ndr_check_string_terminator(struct ndr_pull *ndr, const void *_var, uint32_t count, uint32_t element_size) +NTSTATUS ndr_check_string_terminator(struct ndr_pull *ndr, uint32_t count, uint32_t element_size) { - const char *var = _var; uint32_t i; + struct ndr_pull_save save_offset; - var += element_size*(count-1); + ndr_pull_save(ndr, &save_offset); + ndr_pull_advance(ndr, (count - 1) * element_size); + NDR_PULL_NEED_BYTES(ndr, element_size); for (i = 0; i < element_size; i++) { - if (var[i] != 0) { - return NT_STATUS_UNSUCCESSFUL; + if (ndr->data[ndr->offset+i] != 0) { + return ndr_pull_error(ndr, NDR_ERR_ARRAY_SIZE, "String terminator not present or outside string boundaries"); } } - return NT_STATUS_OK; + ndr_pull_restore(ndr, &save_offset); + return NT_STATUS_OK; } NTSTATUS ndr_pull_charset(struct ndr_pull *ndr, int ndr_flags, const char **var, uint32_t length, uint8_t byte_mul, int chset) |